Finding the Fourth Proportional to 123,073.24, 169,897.76 and 72,078.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,073.24 : 169,897.76 = 72,078.88 : x
2. Step 2: Convert to fraction form
   123,073.24/169,897.76 = 72,078.88/x
3. Step 3: Cross multiply
   123,073.24x = 169,897.76 × 72,078.88
4. Step 4: Simplify right side
   123,073.24x = 12,246,040,255.31
5. Step 5: Solve for x
   x = 12,246,040,255.31/123,073.24
6. Step 6: Final answer
   x = 99,502.05